# x2oStudio vs Milk Bottle

The clearest difference is in-app purchases: x2oStudio at none against Milk Bottle's 1. x2oStudio also leads on ratings volume (303 vs 1). Milk Bottle's advantage is update cadence (every 2 days vs every 3 weeks). On price, rating, ads and device support there is nothing between them.

Both are free to download. Milk Bottle sells 1 one-off in-app purchase. x2oStudio asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for x2oStudio against 5.0 for Milk Bottle. That said, the two scores are not equally well evidenced: x2oStudio has 303 ratings behind it against 1, so its average is the more settled of the two.

x2oStudio ships an update every 3 weeks, Milk Bottle every 2 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | x2oStudio | Milk Bottle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (303 ratings)](https://appshunter.io/ios/app/x2ostudio/id1508596119/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/milk-bottle/id6792562255/reviews)** |
| Number of ratings | **303** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 38 MB | 5 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [HartCore LLC](https://appshunter.io/developer/1508596118) | [YUANLIN DENG](https://appshunter.io/developer/6792562257) |

## What reviewers say

### x2oStudio

[App page](https://appshunter.io/ios/app/x2ostudio/id1508596119)

Easily view class schedules, book your spot, and monitor your fitness journey. Stay organized and motivated with this comprehensive tool.

**Highlights:** View class schedules, Book classes, Track progress, Manage your fitness journey

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


### Milk Bottle

[App page](https://appshunter.io/ios/app/milk-bottle/id6792562255)

A private routine tracker for parents and caregivers to log feedings and diaper changes. It offers a 15-day free trial, after which a one-time purchase unlocks all features. Sync data privately across Apple devices.

**Highlights:** One-tap feeding logging, Multiple feeding types recorded, Next feeding time prediction, Customizable feeding intervals, Diaper change logging, History filtering by date and type, iCloud sync for data backup

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $0.99 | one-time |


## Frequently asked questions

### Is x2oStudio free?

x2oStudio is free to download, with no in-app purchases.

### Is Milk Bottle free?

Milk Bottle is free to download, with in-app purchases available.

### Which has better reviews, x2oStudio or Milk Bottle?

Milk Bottle is rated higher. x2oStudio averages 5.0 out of 5 from 303 ratings, while Milk Bottle averages 5.0 from 1 ratings.

### Do x2oStudio or Milk Bottle have ads?

Neither x2oStudio nor Milk Bottle shows ads.

### Which is updated more often, x2oStudio or Milk Bottle?

x2oStudio ships an update every 3 weeks, and Milk Bottle every 2 days. Most recently, x2oStudio was updated on October 29, 2026 and Milk Bottle on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*